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Finding the Fourth Proportional to 70,571.70, 97,390.05 and 38,743.50

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Solution

The fourth proportional to 70,571.70, 97,390.05 and 38,743.50 is: 53,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,571.70 : 97,390.05 = 38,743.50 : x
  2. Step 2: Convert to fraction form
    70,571.70/97,390.05 = 38,743.50/x
  3. Step 3: Cross multiply
    70,571.70x = 97,390.05 × 38,743.50
  4. Step 4: Simplify right side
    70,571.70x = 3,773,231,402.18
  5. Step 5: Solve for x
    x = 3,773,231,402.18/70,571.70
  6. Step 6: Final answer
    x = 53,466.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.